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PENN Controls Products Catalog

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Technical specifications Table 158: Single pressure controls switch action, low event, high event, and models Switch and action Low event High event Models SPST open low Cut-out (opens line to M1) Cut-in (closes line to M1) P70A, P70B, P170A SPST open high Cut-in (closes line to M1) Cut-Out (opens line to M1) P70C, P70D, P170C, P170D SPDT Opens 1 to 2 and closes 1 to 3 Closes 1 to 2 and opens 1 to 3 P70E, P70F Four-wire, two-circuits, 1 N.O., 1 N.C. open low Cut-out (opens M2 to line and closes M1 to line) Cut-in (closes M2 to line and opens M1 to line) P70G, P70H Four-wire, two-circuits, 1 N.O., 1 N.C. open high Cut-in (closes M2 to line and opens M1 to line) Cut-out (opens M2 to line and closes M1 to line) P70J, P70K, P170K DPST open low Cut-out (opens M1 to line and M2 to line) Cut-in (closes M1 to line and M2 to line) P72A, P72B DPST open high Cut-in (closes M1 to line and M2 to line) Cut-out (opens M1 to line and M2 to line) P72C, P72D 136 Refrigeration Products Catalog

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